| 类和说明 |
|---|
| FSNamesystem
FSNamesystem does the actual bookkeeping work for the
DataNode.
|
| NameNode
NameNode serves as both directory namespace manager and
"inode table" for the Hadoop DFS.
|
| 类和说明 |
|---|
| MetaRecoveryContext
Context data for an ongoing NameNode recovery process.
|
| 类和说明 |
|---|
| BlockPlacementPolicy
This interface is used for choosing the desired number of targets
for placing block replicas.
|
| BlockPlacementPolicy.NotEnoughReplicasException |
| BlockPlacementPolicyDefault
The class is responsible for choosing the desired number of targets
for placing block replicas.
|
| CheckpointSignature
A unique signature intended to identify checkpoint transactions.
|
| CorruptReplicasMap
Stores information about all corrupt blocks in the File System.
|
| DatanodeDescriptor
DatanodeDescriptor tracks stats on a given DataNode,
such as available storage capacity, last update time, etc.,
and maintains a set of blocks stored on the datanode.
|
| FSClusterStats
This interface is used for retrieving the load related statistics of
the cluster.
|
| FSEditLog
FSEditLog maintains a log of the namespace modifications.
|
| FSImage
FSImage handles checkpointing and logging of the namespace edits.
|
| FSInodeInfo
This interface is used used the pluggable block placement policy
to expose a few characteristics of an Inode.
|
| FSNamesystem
FSNamesystem does the actual bookkeeping work for the
DataNode.
|
| LeaseManager
LeaseManager does the lease housekeeping for writing on files.
|
| MetaRecoveryContext
Context data for an ongoing NameNode recovery process.
|
| NameNode
NameNode serves as both directory namespace manager and
"inode table" for the Hadoop DFS.
|
| NameNodeMXBean
This is the JMX management interface for namenode information
|
| 类和说明 |
|---|
| CheckpointSignature
A unique signature intended to identify checkpoint transactions.
|
| DatanodeDescriptor.BlockTargetPair
Block and targets pair
|
Copyright © 2009 The Apache Software Foundation